Grain separator and grader.



F. G. LYMAN.

GRAIN SEPARATOB AND GRADBB.

APPLICATION FILED 00130, 1901.

903,390} Patented Nov. 10,1908.

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anueutoz Wi tn use:

F. G. LYMAN.

GRAIN SEPARATOB AND GRADER.

APPLICATION II LED OCT. 80, 1907.

903,390. Patented Nov. 10, 1908.

the

' i M. i I I I. UNITED STATES PATENT OFFICE. THANK G; LYMAN, OF 'WAPAKONETA; OHIO, ASSIOEiOh- Ol ON E-HALF TO JOHN E. GUNTIHEK, OF WA PAKONETA, OHIO.

GRAIN SEPARATOR AND GRAIbER.

Specification of Letters Patent.

Patented Nov. 10, 1908.

Application filed October so, 1907. Serial No. 399,953.

- Ohio, have invented certain new and useful Improvements in Grain Separators and- Graders', of which the following is a specification, reference being had therein to the accompanying drawing.

This inventlon relates to a grain separator and grader and artieularly to a shaking screen constructlon thereof wherein the grain from the separator is passed through annair blast in its movement-b the lgrading screen.

T e inventionihas for an object to provide a noveland improved construction of steppedseparating screen having aprons thereon so-arranged that the grain to be graded passes through a series of screens and eneath the aprons while the material separated from the grain passes over said aprons and is so arately dischar ed.

A furt er object of t' e invention is to provideim roved connections for positively vibrating tlie separator and grader shoes at a re id speed and directly from the shaft of last fan. i Other and further objects and-advantages ofthe invention will be hereinafter disclosed .and novel features thereof set forth in the struction or conformation and is provided at its top with a feed ho per 2 having a sliding gate 3 controlled by the rod 4 as usual. Bcneat-h the hopper is an inclined separating shoe 5 supported at its upper end by flexible hangers 6 and having a solid bottom 7 provided with a stepped portion 8. This shoe is mounted upon ways 9 at its lower end to be reciprocated or vibrated as hereinafter described. Fitted within the shoe is a screen frame 10 provided with step ed screens 11, 12, and 13 of downwardly ecreasing area.

gravity to The grain assing through the screen 11 falls upon the bottom 8 of the. shoe and is delivered therefrom to the. screen 12. Beneath this screen a solid bottom 14 is disposed and it delivers to the screen 13. Grain passing through the screen 13 falls upon the bottom 7 of the shoe and is discharged at its lower end upon a fall board 15 which extends through an opening 16 in the Wind pipe 17 Above the screen 11 and resting thereon an apron 18 is dis osed to prevent the upending of oats, stic s or other ma terial during their passa e over this screen. Such material passes rom beneath this apron onto the top of apron 19-resting upbn the screen 12, and the discharge from the apron 19 falls u on the a ron 20 resting on the screen 13. The final ischarge from the latter apron and the top ofthescreenlB, is

into a transversely disposed trough 21 hav ing an open end 22 at one side of the machine. r

The wind pipe is provided at its upper end witha chaff discharge 23 directed away from the se arator. The lower end of the pipe is forms with a delivery plate 24 disposed at the head of a grader shoe 25. Communicating with this end of the ipe is a wind passe e 26 from the fan 27 having the oppositeen' s of its shaft 28 mounted upon the machine frame. The fan casing 29 is formed with openings 30 at op osite sides and draft boards 31 are sliding mounted between the osts 32 to close t ese openin s.- These oards-are slotted at 33 to receive ol ts from the fan casing and are ad'ustablg held in poiition by lever nuts 34 t read-e upon these The fan shaft is provided with a sprocket wheel 35 on one end from which a driving chain 36 extends to a hand wheel 37 pivotally mounted at the upper portion of the ma chine. The sprocket as thereon an eccentrically disposed pin 38 embraced within the bifurcated upper end 39 of the vibratin lever 40 which is pivoted by thekeeper 41 while its lower end 42 carries a cross rod 43 upon which the lower end of the rader shoe is mounted. For this purpose t e shoe is rovided with a socket 44 upon its under ace and a pivoted latch 45 mounted at one side of the rod so as to prevent disen agement of the shoe therefrom when in are position shown in Fig. 2. By swinging this latch away from the socket the shoe may be readilfi removed from the nia'chine. The fan s aft is provided'with a crank pin 46 at the opposite side from thes rocket wheel there on. This pin is dispose in the forked upper end 47 of the lever 48 which is pivoted in kee er 4'9 and connected at its lower end 50 Witl l thecrossrod 43 the same as the lever 40. The pin 46 is also pivotally connected to a pitman 51 extending to a crank'arm 52 y a hinged joint 57, as shown in Figs.

similar to those shown in Patent 543,532 and adapted to roperl grade and discharge the grain there romp he grader shoe is mounted to be vibrated longitudinally by the levers and cross rod connected thereto. to produce a vertical vibration a kicker plate 58 is secured to the under face thereof to traverse a roller 59 secured 'to the side of a collecting charges mto a slidingly mounted receptacle 61 upon base of the machine.

In the operation of the sepa-ratorthe grain passing through the u per screen travels be through each. of the neath the aprons an successive screens, while .the material which casing.

does not pass through the upper screen travels over the to of the aprons to the discharge spout. T e aprons thus prevent upending of the material on the screens and conduct the waste material over each screen so as to obviate any mixing thereof. The

grain is thus thoroughly separated from orei'gn matter during its passage over the stepped screens of the separating shoe so that a complete separation is effected before the grain is discharged into the wind pipe. This obviates the. necessity of a high air pressure which frequentl blows out the grain with the foreign materia but-permits the chaff and,

light material to be carried off by a constant moderate blast, not'sufficient to affect the fall- ;of 4 grain by gravity to the grader screen disosed at the lower end of the wind pipe and beow the connection of the wind passage there-.' with. The blast of air is regulated by the ad-' justable draft boards at the openings to the fan The'kicker plate at the upper end of the grader screen gives it a vertica vibration, which keeps the screen clean and effects a erfect grading thereon.- The connection or vibrating theseparator and grader shoes fromthe fan shaft effects a very rapid movement thereof eonseqnentiy and increases the cleaning capacity. of the In order a .hopper 60. This hopper dis chute,

screens delivering to each other and to said ture which can be economically manufactured.

Having described m forth its merits what l claim and desire to secure by Letters Patentis 1. In a grain separator, aseparating shoe having stepped imperforate floors and a transverse conducting chute at its lower end spaced therefrom to provide a discharge opening, an independent frame disposed within said shoe and provided with stepped screens-located above said .fioors withthe lowermost thereof discharging into said and a series of aprons upon said chute.

2. In a rainseparator, a separating shoe, a grader s oe, a wind pipe to conduct from one shoe to the other, a fan casing communicating with said pipe, a shaft provided with'a fan within said casing, a pivoted l'e ver connected at one end to an eccentric pin .on said shaft and at its other end to thelower-part of the rader shoe, a rock shaft" disposed beneat and connected to the separating shoe, and a connection from an'eccentric' pin on said fan shaft to said rock shaft.

3. In a grain se arator, a separating shoe, a grader s provided with a crank pin-at one end, a pivoted lever embracingsaid 'in and connected to said grader shoe, a roe to vibrate the separating-shoe and having a crank armfthereon, and apitman from said arm to said pin. 3 g

4. In a' grain'separator, a separating shoe, a grader shoe, a blast fan'having its shaft provided with acrank .pin at each end, pivoted levers at opposite sides of .the separator-beneath said shaft and directly connected to said pins, a cross rod connecting said levers, sockets upon the lowerendo the grader shoe seated'on said rod, and a-connection from one fan shaft pin to vibrate-the separating shoe.'

In testimony whereof I affix-my signature in presence of two witnesses.

FRANK G.'LYMAN. Witnesses:

AE'T'WNT Srsssnn, HARRY EIQHLER.

invention and set oe, a lastfan having its shaft shaft connected 

